I am using the USRP board with the DBSRX daughter board.
According to my knowledge, the swiss GSM 900 frequency band consists of
channels at an interval of 200kHz. However, when I build a simple system
with an USRP source and a FFT sink and analyze the spectrum around
only see peaks spaced 4MHz (about 30dB above noise level). I also tried
set the USRP gain to 100dB, the shape of the frequency plot didn’t
Is it possible to see these 200kHz channels without further filtering?
I miss an important detail in how these 4MHz peaks come about?
Thanks in advance.
View this message in context:
Sent from the GnuRadio mailing list archive at Nabble.com.